Firefox Security Vulnerabilities

CVE-2022-46883

Mozilla developers Gabriele Svelto, Yulia Startsev, Andrew McCreight and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 106. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitra...

CVE-2022-46884

A potential use-after-free vulnerability existed in SVG Images if the Refresh Driver was destroyed at an inopportune time. This could have lead to memory corruption or a potentially exploitable crash.Note : This advisory was added on December 13th, 2022 after discovering it was inadvertently left o...

CVE-2022-46885

Mozilla developers Timothy Nikkel, Ashley Hale, and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 105. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnera...

CVE-2023-0767

An attacker could construct a PKCS 12 cert bundle in such a way that could allow for arbitrary memory writes via PKCS 12 Safe Bag attributes being mishandled. This vulnerability affects Firefox < 110, Thunderbird < 102.8, and Firefox ESR < 102.8.

CVE-2023-23597

A compromised web child process could disable web security opening restrictions, leading to a new child process being spawned within the <code>file://</code> context. Given a reliable exploit primitive, this new process could be exploited again leading to arbitrary file read. This vulnerability aff...

CVE-2023-23598

Due to the Firefox GTK wrapper code's use of text/plain for drag data and GTK treating all text/plain MIMEs containing file URLs as being dragged a website could arbitrarily read a file via a call to <code>DataTransfer.setData</code>. This vulnerability affects Firefox &lt; 109, Thunderbird &lt; 10...

CVE-2023-23599

When copying a network request from the developer tools panel as a curl command the output was not being properly sanitized and could allow arbitrary commands to be hidden within. This vulnerability affects Firefox &lt; 109, Thunderbird &lt; 102.7, and Firefox ESR &lt; 102.7.

CVE-2023-23600

Per origin notification permissions were being stored in a way that didn't take into account what browsing context the permission was granted in. This lead to the possibility of notifications to be displayed during different browsing sessions.<br>This bug only affects Firefox for Android. Other ope...

CVE-2023-23601

Navigations were being allowed when dragging a URL from a cross-origin iframe into the same tab which could lead to website spoofing attacks. This vulnerability affects Firefox &lt; 109, Thunderbird &lt; 102.7, and Firefox ESR &lt; 102.7.

CVE-2023-23602

A mishandled security check when creating a WebSocket in a WebWorker caused the Content Security Policy connect-src header to be ignored. This could lead to connections to restricted origins from inside WebWorkers. This vulnerability affects Firefox &lt; 109, Thunderbird &lt; 102.7, and Firefox ESR...

CVE-2023-23603

Regular expressions used to filter out forbidden properties and values from style directives in calls to <code>console.log</code> weren't accounting for external URLs. Data could then be potentially exfiltrated from the browser. This vulnerability affects Firefox &lt; 109, Thunderbird &lt; 102.7, a...

CVE-2023-23604

A duplicate <code>SystemPrincipal</code> object could be created when parsing a non-system html document via <code>DOMParser::ParseFromSafeString</code>. This could have lead to bypassing web security checks. This vulnerability affects Firefox &lt; 109.

CVE-2023-23605

Memory safety bugs present in Firefox 108 and Firefox ESR 102.6. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox &lt; 109, Thunderbird &lt; 102.7, and Fir...

CVE-2023-23606

Memory safety bugs present in Firefox 108. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox &lt; 109.

CVE-2023-25728

The <code>Content-Security-Policy-Report-Only</code> header could allow an attacker to leak a child iframe's unredacted URI when interaction with that iframe triggers a redirect. This vulnerability affects Firefox &lt; 110, Thunderbird &lt; 102.8, and Firefox ESR &lt; 102.8.

CVE-2023-25729

Permission prompts for opening external schemes were only shown for <code>ContentPrincipals</code> resulting in extensions being able to open them without user interaction via <code>ExpandedPrincipals</code>. This could lead to further malicious actions such as downloading files or interacting with...

CVE-2023-25730

A background script invoking <code>requestFullscreen</code> and then blocking the main thread could force the browser into fullscreen mode indefinitely, resulting in potential user confusion or spoofing attacks. This vulnerability affects Firefox &lt; 110, Thunderbird &lt; 102.8, and Firefox ESR &l...

CVE-2023-25731

Due to URL previews in the network panel of developer tools improperly storing URLs, query parameters could potentially be used to overwrite global objects in privileged code. This vulnerability affects Firefox &lt; 110.

CVE-2023-25732

When encoding data from an <code>inputStream</code> in <code>xpcom</code> the size of the input being encoded was not correctly calculated potentially leading to an out of bounds memory write. This vulnerability affects Firefox &lt; 110, Thunderbird &lt; 102.8, and Firefox ESR &lt; 102.8.

CVE-2023-25733

The return value from gfx::SourceSurfaceSkia::Map() wasn't being verified which could have potentially lead to a null pointer dereference. This vulnerability affects Firefox &lt; 110.

CVE-2023-25734

After downloading a Windows <code>.url</code> shortcut from the local filesystem, an attacker could supply a remote path that would lead to unexpected network requests from the operating system. This also had the potential to leak NTLM credentials to the resource.<br>This bug only affects Firefox o...

CVE-2023-25735

Cross-compartment wrappers wrapping a scripted proxy could have caused objects from other compartments to be stored in the main compartment resulting in a use-after-free after unwrapping the proxy. This vulnerability affects Firefox &lt; 110, Thunderbird &lt; 102.8, and Firefox ESR &lt; 102.8.

CVE-2023-25736

An invalid downcast from nsHTMLDocument to nsIContent could have lead to undefined behavior. This vulnerability affects Firefox &lt; 110.

CVE-2023-25737

An invalid downcast from <code>nsTextNode</code> to <code>SVGElement</code> could have lead to undefined behavior. This vulnerability affects Firefox &lt; 110, Thunderbird &lt; 102.8, and Firefox ESR &lt; 102.8.

CVE-2023-25738

Members of the <code>DEVMODEW</code> struct set by the printer device driver weren't being validated and could have resulted in invalid values which in turn would cause the browser to attempt out of bounds access to related variables.<br>This bug only affects Firefox on Windows. Other operating sys...

CVE-2023-25739

Module load requests that failed were not being checked as to whether or not they were cancelled causing a use-after-free in <code>ScriptLoadContext</code>. This vulnerability affects Firefox &lt; 110, Thunderbird &lt; 102.8, and Firefox ESR &lt; 102.8.

CVE-2023-25740

After downloading a Windows <code>.scf</code> script from the local filesystem, an attacker could supply a remote path that would lead to unexpected network requests from the operating system. This also had the potential to leak NTLM credentials to the resource.<br>This bug only affects Firefox for...

CVE-2023-25741

When dragging and dropping an image cross-origin, the image's size could potentially be leaked. This behavior was shipped in 109 and caused web compatibility problems as well as this security concern, so the behavior was disabled until further review. This vulnerability affects Firefox &lt; 110.

CVE-2023-25742

When importing a SPKI RSA public key as ECDSA P-256, the key would be handled incorrectly causing the tab to crash. This vulnerability affects Firefox &lt; 110, Thunderbird &lt; 102.8, and Firefox ESR &lt; 102.8.

CVE-2023-25743

A lack of in app notification for entering fullscreen mode could have lead to a malicious website spoofing browser chrome.<br>This bug only affects Firefox Focus. Other versions of Firefox are unaffected. . This vulnerability affects Firefox &lt; 110 and Firefox ESR &lt; 102.8.

CVE-2023-25744

Mmemory safety bugs present in Firefox 109 and Firefox ESR 102.7. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox &lt; 110 and Firefox ESR &lt; 102.8.

CVE-2023-25745

Memory safety bugs present in Firefox 109. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox &lt; 110.

CVE-2023-25747

A potential use-after-free in libaudio was fixed by disabling the AAudio backend when running on Android API below version 30.This bug only affects Firefox for Android. Other versions of Firefox are unaffected. This vulnerability affects Firefox for Android &lt; 110.1.0.

CVE-2023-25748

By displaying a prompt with a long description, the fullscreen notification could have been hidden, resulting in potential user confusion or spoofing attacks. <br>This bug only affects Firefox for Android. Other operating systems are unaffected. . This vulnerability affects Firefox &lt; 111.

CVE-2023-25749

Android applications with unpatched vulnerabilities can be launched from a browser using Intents, exposing users to these vulnerabilities. Firefox will now confirm with users that they want to launch an external application before doing so. <br>This bug only affects Firefox for Android. Other versi...

CVE-2023-25750

Under certain circumstances, a ServiceWorker's offline cache may have leaked to the file system when using private browsing mode. This vulnerability affects Firefox &lt; 111.

CVE-2023-25751

Sometimes, when invalidating JIT code while following an iterator, the newly generated code could be overwritten incorrectly. This could lead to a potentially exploitable crash. This vulnerability affects Firefox &lt; 111, Firefox ESR &lt; 102.9, and Thunderbird &lt; 102.9.

CVE-2023-25752

When accessing throttled streams, the count of available bytes needed to be checked in the calling function to be within bounds. This may have lead future code to be incorrect and vulnerable. This vulnerability affects Firefox &lt; 111, Firefox ESR &lt; 102.9, and Thunderbird &lt; 102.9.

CVE-2023-28159

The fullscreen notification could have been hidden on Firefox for Android by using download popups, resulting in potential user confusion or spoofing attacks. <br>This bug only affects Firefox for Android. Other operating systems are unaffected. . This vulnerability affects Firefox &lt; 111.

CVE-2023-28160

When following a redirect to a publicly accessible web extension file, the URL may have been translated to the actual local path, leaking potentially sensitive information. This vulnerability affects Firefox &lt; 111.

CVE-2023-28161

If temporary "one-time" permissions, such as the ability to use the Camera, were granted to a document loaded using a file: URL, that permission persisted in that tab for all other documents loaded from a file: URL. This is potentially dangerous if the local files came from different sources, such ...

CVE-2023-28162

While implementing AudioWorklets, some code may have casted one type to another, invalid, dynamic type. This could have led to a potentially exploitable crash. This vulnerability affects Firefox &lt; 111, Firefox ESR &lt; 102.9, and Thunderbird &lt; 102.9.

CVE-2023-28163

When downloading files through the Save As dialog on Windows with suggested filenames containing environment variable names, Windows would have resolved those in the context of the current user. <br>This bug only affects Firefox on Windows. Other versions of Firefox are unaffected. . This vulnerabi...

CVE-2023-28164

Dragging a URL from a cross-origin iframe that was removed during the drag could have led to user confusion and website spoofing attacks. This vulnerability affects Firefox &lt; 111, Firefox ESR &lt; 102.9, and Thunderbird &lt; 102.9.

CVE-2023-28176

Memory safety bugs present in Firefox 110 and Firefox ESR 102.8. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox &lt; 111, Firefox ESR &lt; 102.9, and Thu...

CVE-2023-28177

Memory safety bugs present in Firefox 110. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox &lt; 111.

CVE-2023-29531

An attacker could have caused an out of bounds memory access using WebGL APIs, leading to memory corruption and a potentially exploitable crash. This bug only affects Firefox and Thunderbird for macOS. Other operating systems are unaffected. This vulnerability affects Firefox &lt; 112, Firefox ESR ...

CVE-2023-29532

A local attacker can trick the Mozilla Maintenance Service into applying an unsigned update file by pointing the service at an update file on a malicious SMB server. The update file can be replaced after the signature check, before the use, because the write-lock requested by the service does not w...

CVE-2023-29533

A website could have obscured the fullscreen notification by using a combination of <code>window.open</code>, fullscreen requests, <code>window.name</code> assignments, and <code>setInterval</code> calls. This could have led to user confusion and possible spoofing attacks. This vulnerability affect...

CVE-2023-29534

Different techniques existed to obscure the fullscreen notification in Firefox and Focus for Android. These could have led to potential user confusion and spoofing attacks. This bug only affects Firefox and Focus for Android. Other versions of Firefox are unaffected. This vulnerability affects Fire...